Spacers in rear end cap.

Hi, I just recently replaced my walking belt with a Treadmill Doctor belt and when I took the rear end cap off the spacers fell out before I could see where they were. I can't figure out where they go back in. Could you please tell me how? A picture or video would be even better if available!! Thank you Shelly

I figured out where it goes. It goes over the slot where the roller fits in the endcap. You put it on once you get the roller in place so that it is between the roller and the walking deck. I was able to find a diagram that showed it. Thank you for your help!!!